Add macros to skip adding headers to cfgFunctions

[PabstMirror]

Adds optional macros to remove both

• CfgFunction headers (which add code for _fnc_scriptNameParent / _fnc_scriptName)
• CBA Macro SCRIPT (which adds scriptName 'PREFIX\COMPONENT\NAME')

e.g. CBA_fnc_currentUnit is a single line of code, but becomes

CBA_fnc_currentUnit = {
    private _fnc_scriptNameParent = if (isNil '_fnc_scriptName') then {'CBA_fnc_currentUnit'} else {_fnc_scriptName};
    private _fnc_scriptName = 'CBA_fnc_currentUnit';
    scriptName _fnc_scriptName;
    scriptName 'cba\common\currentUnit';
    missionNamespace getVariable ["bis_fnc_moduleRemoteControl_unit", player]

Changing execution time from 0.0022 ms to 0.0045 ms.

There should be no change to anyone else using CBA macros unless they add these defines.
For CBA both are set in main/script_mod.hpp

[PabstMirror]

for addons not using the macro PATHTO_FNC1 (https://github.com/CBATeam/CBA_A3/blob/master/addons/events/CfgFunctions.hpp)

• convert to use macro and drop description
• just add CFGFUNCTION_HEADER to existing classes?